1 /* $OpenBSD: pk7_attr.c,v 1.9 2014/06/29 17:05:36 jsing Exp $ */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 2001. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 2001-2004 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing@OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay@cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh@cryptsoft.com). 56 * 57 */ 58 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <openssl/bio.h> 62 #include <openssl/asn1.h> 63 #include <openssl/asn1t.h> 64 #include <openssl/pem.h> 65 #include <openssl/pkcs7.h> 66 #include <openssl/x509.h> 67 #include <openssl/err.h> 68 69 int 70 PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si, STACK_OF(X509_ALGOR) *cap) 71 { 72 ASN1_STRING *seq; 73 if (!(seq = ASN1_STRING_new())) { 74 PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP, 75 ERR_R_MALLOC_FAILURE); 76 return 0; 77 } 78 seq->length = ASN1_item_i2d((ASN1_VALUE *)cap, &seq->data, 79 ASN1_ITEM_rptr(X509_ALGORS)); 80 return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities, 81 V_ASN1_SEQUENCE, seq); 82 } 83 84 STACK_OF(X509_ALGOR) * 85 PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si) 86 { 87 ASN1_TYPE *cap; 88 const unsigned char *p; 89 90 cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities); 91 if (!cap || (cap->type != V_ASN1_SEQUENCE)) 92 return NULL; 93 p = cap->value.sequence->data; 94 return (STACK_OF(X509_ALGOR) *) 95 ASN1_item_d2i(NULL, &p, cap->value.sequence->length, 96 ASN1_ITEM_rptr(X509_ALGORS)); 97 } 98 99 /* Basic smime-capabilities OID and optional integer arg */ 100 int 101 PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg) 102 { 103 X509_ALGOR *alg; 104 105 if (!(alg = X509_ALGOR_new())) { 106 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE); 107 return 0; 108 } 109 ASN1_OBJECT_free(alg->algorithm); 110 alg->algorithm = OBJ_nid2obj(nid); 111 if (arg > 0) { 112 ASN1_INTEGER *nbit; 113 114 if (!(alg->parameter = ASN1_TYPE_new())) 115 goto err; 116 if (!(nbit = ASN1_INTEGER_new())) 117 goto err; 118 if (!ASN1_INTEGER_set(nbit, arg)) { 119 ASN1_INTEGER_free(nbit); 120 goto err; 121 } 122 alg->parameter->value.integer = nbit; 123 alg->parameter->type = V_ASN1_INTEGER; 124 } 125 if (sk_X509_ALGOR_push(sk, alg) == 0) 126 goto err; 127 return 1; 128 129 err: 130 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE); 131 X509_ALGOR_free(alg); 132 return 0; 133 } 134 135 int 136 PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO *si, ASN1_OBJECT *coid) 137 { 138 if (PKCS7_get_signed_attribute(si, NID_pkcs9_contentType)) 139 return 0; 140 if (!coid) 141 coid = OBJ_nid2obj(NID_pkcs7_data); 142 return PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, 143 V_ASN1_OBJECT, coid); 144 } 145 146 int 147 PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO *si, ASN1_TIME *t) 148 { 149 if (!t && !(t = X509_gmtime_adj(NULL, 0))) { 150 PKCS7err(PKCS7_F_PKCS7_ADD0_ATTRIB_SIGNING_TIME, 151 ERR_R_MALLOC_FAILURE); 152 return 0; 153 } 154 return PKCS7_add_signed_attribute(si, NID_pkcs9_signingTime, 155 V_ASN1_UTCTIME, t); 156 } 157 158 int 159 PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO *si, const unsigned char *md, 160 int mdlen) 161 { 162 ASN1_OCTET_STRING *os; 163 164 os = ASN1_OCTET_STRING_new(); 165 if (!os) 166 return 0; 167 if (!ASN1_STRING_set(os, md, mdlen) || 168 !PKCS7_add_signed_attribute(si, NID_pkcs9_messageDigest, 169 V_ASN1_OCTET_STRING, os)) { 170 ASN1_OCTET_STRING_free(os); 171 return 0; 172 } 173 return 1; 174 } 175